I gave up and bought a new old stock logic board... now the CC boots and runs perfectly!
Conclusion : Analog board etc are working, the issue is located on the logic board.
I swapped the roms from the working to the non-working logic board but it doesn't fix the issue, so it is also not the roms.
Conclusion : Analog board etc are working, the issue is located on the logic board.
I swapped the roms from the working to the non-working logic board but it doesn't fix the issue, so it is also not the roms.
